Adjustable ceiling-mounted appliance support



FIG. 1 is a top, front and right side perspective view of an adjustable ceiling-mounted appliance support showing our new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a rear elevational view thereof; and

FIG. 4 is a bottom plan view thereof. 

The ornamental design for an adjustable ceiling-mounted appliance support, as shown. 